scholarly journals Martensitic transformation of Cu-based shape-memory alloys: Elastic anisotropy and entropy change

1992 ◽  
Vol 45 (14) ◽  
pp. 7633-7639 ◽  
Author(s):  
Antoni Planes ◽  
Lluís Mañosa ◽  
David Ríos-Jara ◽  
Jordi Ortín
Keyword(s):  
Martensitic Transformation ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Elastic Anisotropy ◽  
Entropy Change

scholarly journals Influence of Structural Defects on the Properties of Metamagnetic Shape Memory Alloys

Metals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1131
Author(s):  
J. I. Pérez-Landazábal ◽  
V. Sánchez-Alarcos ◽  
V. Recarte ◽  
O. A. Lambri ◽  
F. G. Bonifacich ◽  
...  
Keyword(s):  
Martensitic Transformation ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Entropy Change ◽  
High Energy ◽  
Milling Process ◽  
Structural Defects ◽  
Internal Stresses ◽  
Spin Glass Behavior ◽  
Deformed State

The production of μ-particles of Metamagnetic Shape Memory Alloys by crushing and subsequent ball milling process has been analyzed. The high energy involved in the milling process induces large internal stresses and high density of defects with a strong influence on the martensitic transformation; the interphase creation and its movement during the martensitic transformation produces frictional contributions to the entropy change (exothermic process) both during forward and reverse transformation. The frictional contribution increases with the milling time as a consequence of the interaction between defects and interphases. The influence of the frictional terms on the magnetocaloric effect has been evidenced. Besides, the presence of antiphase boundaries linked to superdislocations helps to understand the spin-glass behavior at low temperatures in martensite. Finally, the particles in the deformed state were introduced in a photosensitive polymer. The mechanical damping associated to the Martensitic Transformation (MT) of the particles is clearly distinguished in the produced composite, which could be interesting for the development of magnetically-tunable mechanical dampers.

Entropy change linked to the martensitic transformation in metamagnetic shape memory alloys

2012 ◽  
Vol 60 (6-7) ◽  
pp. 3168-3175 ◽  
Author(s):  
V. Recarte ◽  
J.I. Pérez-Landazábal ◽  
V. Sánchez-Alarcos ◽  
V. Zablotskii ◽  
E. Cesari ◽  
...  
Keyword(s):  
Martensitic Transformation ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Entropy Change

scholarly journals Entropy Change during Martensitic Transformation in Ni50−xCoxMn50−yAly Metamagnetic Shape Memory Alloys

Entropy ◽  
2014 ◽  
Vol 16 (3) ◽  
pp. 1808-1818 ◽  
Author(s):  
Xiao Xu ◽  
Wataru Ito ◽  
Takeshi Kanomata ◽  
Ryosuke Kainuma
Keyword(s):  
Martensitic Transformation ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Entropy Change

Atomic order and martensitic transformation entropy change in Ni–Co–Mn–In metamagnetic shape memory alloys

2016 ◽  
Vol 110 ◽  
pp. 61-64 ◽  
Author(s):  
A.M. Pérez-Sierra ◽  
N.M. Bruno ◽  
J. Pons ◽  
E. Cesari ◽  
I. Karaman
Keyword(s):  
Martensitic Transformation ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Entropy Change ◽  
Atomic Order

Atomic Order and Martensitic Transformation in Cu-Al-Be Shape Memory Alloys

1995 ◽  
Vol 05 (C8) ◽  
pp. C8-973-C8-978
Author(s):  
M. Jurado ◽  
Ll. Mañosa ◽  
A. González-Comas ◽  
C. Stassis ◽  
A. Planes
Keyword(s):  
Martensitic Transformation ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Atomic Order
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